Fault Clearance; Display Levels - techem vario 4.1.3 Betriebsanleitung

Code Meaning
E-6 Meter recognises an incorrect flow direction.
Check the installation.
E-7 No reasonable ultrasonic receive signal.
Usually: Air in the pipe
Info codes are displayed in a separate sequence on the display. As soon as the error/s is/
are rectified, the sequence is also no longer displayed.
* If several errors occur, they will be shown in the display from the left to the right. Error
C1 is an exception and is only displayed alone.

Fault clearance

Please check the following points before looking yourself for a defect in the heat meter:
• Is the heating on?
• Is the circulation pump running?
• Are the shut-off devices fully open?
• Is the pipe free (possibly clean the strainer)?
If error E6 occurs, please follow these steps:
Check the meter installation.
1
2 Generate a positive flow.
3 Check the current flow (LCD).
4 Wait until the LCD is off again (approx. 5 min).
5 Press the button again.
6 The result of flow direction recognition is only displayed after 5 sec.
7 Check LCD as to whether E6 is now off.
!
The meter needs to be replaced if E6 has not gone off.

Display levels

The display is switched off under normal operation. Approx. 5 minutes after the last time a
key is pressed, the display is deactivated automatically. The flow rate/temperature display
is always updated every 5 sec. The meter has 4 display levels. You can switch between the
display levels using a long push of the button. A short push of the button takes you to the
next display within a level.
Some windows contain several sequences. In these windows, the screen switches to the
next sequence automatically every 2 sec.
24